using System;
using System.Numerics;
public class ExempleConversion
{
public static void Main()
{
BigInteger[] nombre = { Int64.MinValue, Int64.MaxValue };
foreach (BigInteger number in nombre)
{
byte[] bytes = number.ToByteArray();
foreach (byte byteValue in bytes)
Console.Write("{0:X2} ", byteValue);
}
}
}